<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta content="width=device-width, initial-scale=1.0" name="viewport">
    <title>多端互传</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
        }

        .header {
            text-align: center;
            margin-bottom: 40px;
            animation: fadeInDown 0.8s ease;
        }

        .title {
            font-size: 48px;
            color: #2c3e50;
            margin-bottom: 10px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .subtitle {
            font-size: 18px;
            color: #666;
        }

        .nav-menu {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
        }

        .nav-item {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            animation: fadeInUp 0.8s ease;
            min-width: 250px;
        }

        .nav-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .nav-item a {
            text-decoration: none;
            color: #2c3e50;
            font-size: 20px;
            font-weight: 500;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
        }

        .nav-icon {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 768px) {
            .title {
                font-size: 36px;
            }

            .nav-menu {
                flex-direction: column;
                align-items: center;
            }

            .nav-item {
                width: 100%;
                max-width: 300px;
            }
        }
    </style>
</head>

<body>
<div class="container">
    <header class="header">
        <h1 class="title">多端互传</h1>
        <p class="subtitle">简单高效的文件传输解决方案</p>
    </header>

    <nav class="nav-menu">
        <div class="nav-item">
            <a href="/manager">
                <div class="nav-icon">⚙️</div>
                <span>Spring Boot Admin</span>
            </a>
        </div>
        <div class="nav-item">
            <a href="/transfer">
                <div class="nav-icon">📁</div>
                <span>多端互传</span>
            </a>
        </div>
    </nav>
</div>
</body>

</html>
